display window vs show window

display window and show window both are nouns.

Word	Noun	Adjective	Verb	Adverb
display window	Yes	No	No	No
show window	Yes	No	No	No

As nouns, display window and show window are synonyms defined as:

display window and show window: a window of a store facing onto the street; used to display merchandise for sale in the store

Other synonyms of display window include shop window, shopwindow.

display window (noun)	show window (noun)
a window of a store facing onto the street; used to display merchandise for sale in the store	a window of a store facing onto the street; used to display merchandise for sale in the store
	a setting in which something can be displayed to best effect